g If you have a light in your house on a dimmer switch you should try this yourself. In the space below write a paragraph about how the light from an incandescent source changes as the temperature decreases. Notice changes in both how bright the light is and what colors/wavelengths of light you can see. If you have such a light at your house you can also describe how the color and intensity of the light changes when you are just looking with your eyes and not through the spectrometer.

Under conditions for which the same room temperature is maintained by a heating or cooling system, it is not uncommon for a person to feel chilled in the winter but comfortable in the summer. provide a plausible explanation for this situation (with supporting calculations) by considering a room whose air temperature is maintained at 20â°c throughout the year, while the walls of the room are nominally at 27â°c and 14â°c in the summer and winter, respectively. the exposed surface of a person in the room may be assumed to be at a temperature of 32â°c throughout the year and to have an emissivity of 0.90. the coefficient associated with heat transfer by natural convection between the person and the room air is approximately 2 w/m2 â‹…â‹… k. what is the ratio of the thermal resistance due to convection to the thermal resistance due to radiation in the summer? what is the ratio of thermal resistances in the winter

Select the correct answer from each drop-down menu. compared to its surroundings, the concentration of solutes is low inside a cell. so, the cell is with respect to its surroundings. a particular solute in this cell uses energy for its transport from the cell to its surroundings. this type of transport is called

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form